Adjustable knotless loops

ABSTRACT

Methods of attaching a soft tissue to an adjacent bone at a defect site are provided. An adjustable loop region of a flexible construct contained in a bore defined by a fastener is passed through a tissue. The adjustable loop is passed through the tissue. The fastener is passed back through the adjustable loop to fold the adjustable loop upon itself. The fastener is attached to the bone. An adjusting arm on the flexible construct is engaged to reduce the size of the adjustable loop and secure the soft tissue to the bone.

FIELD

The present disclosure relates to methods and apparatuses for securing a flexible construct. In particular, the present disclosure relates to securing a flexible construct with an adjustable loop.

BACKGROUND

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

Surgical procedures are often performed on a body, for example, a human body or anatomy, to repair or replace various portions thereof. For example, the soft tissues of the body may need to be reattached to bones due to trauma, overuse, surgical intervention, or disease.

Soft tissues can be reattached to bone using fastening devices such as screws, staples, and various types of suture anchors. Soft tissues are often fixed to various positions on the bone. For example, to replace a natural tendon fixation point or to replace the tendon itself, fixing a graft to a selected bone area may be desired. One means to fix a soft tissue to the selected area is to provide a suture through a selected portion of the soft tissue and fix the other end of the suture to a selected area on the bone with the fastener. To secure the sutures, the free ends of the suture are tied together to form a knot.

The use of knots in surgical procedures, however, can be improved upon. In minimally invasive procedures, such as arthroscopic or laparoscopic procedures, the surgical site is not readily accessible and limits the surgeon's ability to tie a knot manually. One remote method of securing the suture is tying each of the suture ends into a knot extracorporeally and then remotely advancing the knot into the surgical site using suitably configured instruments. Securing the suture remotely can be cumbersome and time-consuming.

Accordingly, there is a need for improved devices for securing a suture without a knot. There is a need for surgical methods to facilitate easy and efficient securing of the suture.

SUMMARY

The present teachings provide methods of attaching a soft tissue to an adjacent bone at a defect site. An adjustable loop of a flexible construct contained in a bore defined by a fastener is passed through the soft tissue. The fastener is passed back through the adjustable loop to fold the adjustable loop upon itself. The fastener is attached to the bone. An adjusting arm on the flexible construct is engaged to reduce the size of the adjustable loop and secure the soft tissue to the bone.

The present teachings also provide methods of repairing a cartilage defect. An adjustable loop of a flexible construct is offset through a bore defined by a fastener. The adjustable loop is secured to a proximal end of the fastener with a restriction element. The adjustable loop is passed through the cartilage. The fastener is passed back through the adjustable loop to fold the adjustable loop upon itself. The fastener is fixed to an area adjacent the cartilage defect such that the adjustable loop and a proximal end of the fastener abut the cartilage defect. An adjusting arm on the flexible construct is engaged to reduce the size of the adjustable loop and secure the soft tissue to the bone.

The present teachings further provide methods of attaching a soft tissue to an adjacent bone at a defect site. An adjustable loop of a first flexible construct contained in a bore defined by a first fastener is passed through a tissue. The first fastener is then attached to the bone. A second fastener having a second adjustable loop of a second flexible construct passed through a bore therein is passed through the first adjustable loop on the first fastener. The second fastener is passed back through the first adjustable loop to interlace the first adjustable loop and the second adjustable loop.

Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.

DRAWINGS

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.

FIG. 1 depicts a flexible construct according to various embodiments;

FIG. 2 depicts a fully extended flexible construct according to various embodiments;

FIGS. 3A and 3B depict movement of the adjustable loop according to various embodiments;

FIG. 4 depicts an assembly of an adjustable loop disposed about a suture anchor according to various embodiments;

FIG. 5 depicts a cross-section of the assembly of FIG. 4;

FIG. 6 depicts the adjustable loop disposed about a suture anchor and attached to a driver according to various embodiments;

FIG. 7 depicts an exploded view of the assembly of FIG. 6;

FIGS. 8A through 8E depict a surgical technique according to various embodiments; and

FIGS. 9A through 9D depict a surgical technique using two flexible constructs according to various embodiments.

DETAILED DESCRIPTION

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. Although certain examples and surgical methods disclosed herein are in conjunction with a suture anchor, it is understood that the suture fixation device can be any device with which to hold a suture. While the present teachings are disclosed in connection with labral repairs, it is understood that the devices and surgical techniques can easily be adapted for other orthopedic and non-orthopedic uses.

Referring to FIGS. 1 through 3B, the flexible construct 10 includes an adjustable loop 12, a passage 14, and an adjusting arm 16. Reduction of the adjustable loop 12 compresses the tissue and provides fixation of the tissue. The adjustable loop 12 and the surgical methods detailed herein, eliminate the need to tie a knot and thereby increase surgical efficiency. As compared to traditional sutures secured by tying a knot, the flexible construct 10 of various embodiments provides increased load to failure, has multiple-fold increased strength, has a decreased stretch at failure, and has multiple-fold stiffness at failure.

Referring to FIG. 2, the flexible construct 10 can be made from any biocompatible material that is flexible and can pass through and secure a tissue. Exemplary materials include, but are not limited to, non-resorbable polymers, such as polyethylene or polyester, resorbable polymers, metals, and various combinations thereof. The materials can include those formed into a monofilament, multiple filaments, cables, and the like. In various embodiments, the flexible construct 10 is made of a hollow material to allow for the appropriate folding and tensioning thereon.

In various embodiments, the flexible construct 10 can be a suture 18. The suture 18 used to form the construct is generally a hollow suture having a distal end 20 and proximal end 22. The suture 18 can be formed as a braided or multiple-filament suture structure that is formed to define a substantially tubular hollow-shaped flexible construct 10.

The suture 18 contains a first opening 24 located closer to the distal end 20 and the second opening 26 located closer to the proximal end 22. In various embodiments, the first opening 24 and the second opening 26 can extend along a top surface of the suture 18 and are sized to accommodate passage of the distal end 20 of the suture therethrough. It is understood that the first opening 24 and the second opening 26 need not be formed by cutting the suture 18 or by removing any suture material. For example, the first opening 24 or the second opening 26 can be formed by passing the suture distal end 20 through the sidewall of the hollow tubular suture 18.

The passage 14 is defined by the area between the first opening 24 and the second opening 26. The passage 14 can be a short passage, can extend to the length of a fastener used therewith, or have a greater length, as further detailed later herein.

To provide the adjustable loop 12 and the adjusting arm 16, the distal end 20 of the suture 18 is passed through the first opening 24, into and through the passage 14, and advanced out of the second opening 26. The portion exiting from the second opening 26 provides the adjusting arm 16 and the folded end provides the adjustable loop 12.

Other adjustable loops that are useful in the various embodiments detailed herein are disclosed in U.S. patent application Ser. No. 11/541,506 to Stone, filed Sep. 29, 2006, and assigned to Biomet Sports Medicine, Inc., which is hereby incorporated by reference.

Referring to FIGS. 3A and 3B, the adjusting arm 16 is engaged or pulled in direction A to cause movement of the adjustable loop 12. As the adjustable loop 12 is reduced in size (or creating a smaller diameter loop 12), the adjusting arm 16 lengthens as shown in FIG. 3B. In various embodiments, the movement of the suture 18 is only in the direction of arrow A and movement is prevented in the opposite direction. This unidirectional movement is controlled by maintaining tension (by pulling, for example) on the flexible construct 10 to radially compress the passage 14 about the suture portion contained therein as further detailed later herein.

To facilitate the unidirectional movement, a restriction element 28 can be included near the proximal end 22. The restriction element 28 controls movement of the adjustable loop 12 and the adjusting arm 16. Moreover, the restriction element 28 can prevent displacement of the flexible construct 10 in minimally invasive procedures. As depicted, the restriction element 28 is a knot. It is understood that the restriction element 28 does not provide the tissue fixation, but it is the tissue compression provided by the reduction of the adjustable loop 12 about the tissue that provides the fixation. The restriction element 28 can include other devices used to retain a suture, such as a suture clip.

The flexible construct 10 can be attached to a fastener to create an assembly. As shown in FIGS. 4 and 5, an asymmetric suture anchor 100 is used as the fastener. The asymmetric suture anchor 100 is similar to anchors described in U.S. patent application Ser. No. 11/386,068 to Stone et al., filed Mar. 21, 2006, and assigned to Biomet Sports Medicine, Inc., which is hereby incorporated by reference.

The asymmetric suture anchor 100 includes a tip 102, an anchor body 104 having an interior bore 106, an exterior suture-receiving channel 108 defined by one side of the anchor body, and a port 110 connecting the interior bore 106 and the exterior suture-receiving channel 108. The anchor can be made of any biocompatible material including, but not limited to, a metal, such as titanium, stainless steel, or alloys of cobalt, chromium, etc., or a polymer such as polyetheretherketone (PEEK) or polymers and copolymers of lactic and glycolic acid.

At the distal end of anchor 100, the tip 102 is adapted to substantially ease entry of the asymmetric suture anchor 100 into the bone portion. The tip 102 can be generally smooth or rounded as shown in FIGS. 4 and 5, or the tip 102 can be pointed as shown in FIGS. 6-9D. The tip 102 guides the anchor 100 such that the anchor 100 can be placed into a pre-drilled hole in a boney tissue to reattach a soft tissue thereto without damaging the soft tissue. In various embodiments, the asymmetric suture anchor 100 can be rotated or twisted upon insertion into the pre-drilled hole to align and set the asymmetric suture anchor 100 prior to completely advancing the anchor 100 to its final position.

Attached to the tip 102 is the anchor body 104. The anchor body 104 can be externally threaded or have helical or annular ribs. The threading can be a helical thread which starts at the meeting point of the tip 102 and the anchor body 104 as shown in threads 112. The threads 112 facilitate engagement of the tissue by the asymmetric suture anchor 100.

A bore 106 in the anchor body 104 extends from a proximal end of the anchor body 104 through an interior portion of the anchor body. The bore 106 generally extends along the longitudinal axis of the anchor body 104 and is open at the proximal end. The bore 106 can be offset with the outer diameter of the anchor body or the bore 106 can be concentric with the outer diameter of the anchor body. The bore 106 provides an area in which a region of the adjustable loop 12 can be placed in the interior of the anchor body 104. The bore 106 is sufficiently sized to prevent passage of the restriction element 28 therethrough. Generally, the restriction element 28 is larger than the bore 106 and cannot fit therein.

As shown in FIG. 5, the restriction element 28 can optionally be connected to the adjustable loop 12 to further secure the adjustable loop 12 in the anchor 100. In such embodiments, the restriction element 28 can be attached to the adjusting arm 16. The adjusting arm 16 can be sewn or knotted into the restriction element to create a bridge or passage across the proximal end of the anchor 100. The adjusting arm 16 can also be passed through the adjustable loop 12 to interlace the adjusting arm 16 and the adjustable loop 12. In either such embodiment, the adjustable loop is further secured to the anchor 100.

The bore 106 is connected to a suture-receiving channel 108 with the port 110. The suture-receiving channel 108 is located on an exterior surface of the anchor body 104. The suture-receiving channel 108 provides an area in which a region of the adjustable loop 12 can optionally be placed on the exterior of the anchor body 104 without damaging the flexible construct 10.

The port 110 connecting the suture-receiving channel 108 and the interior bore 106 is generally perpendicular to at least one of the suture-receiving channel 108 and the interior bore 106. The port 110 provides the communication between the inside of the anchor (interior bore 106) and the outside of the anchor (suture-receiving channel 108). The port 110 is sized to receive the adjustable loop 12. As shown, the port 110 and the external suture-receiving channel 108 partially extend into the tip 102 and provide a break in the threading 112. The port 110 can have the same diameter as the interior bore 106. In various embodiments, the port 110 diameter, the interior bore 106 diameter, and the cross-section of the suture-receiving channel 108 are the same. The anchor 100 is stable and will not toggle when stress is placed on the anchor 100.

The suture-receiving channel 108 and the bore 106 are considered to be offset or asymmetrical due to the adjustable loop 12 being partly received in the interior of the anchor body 104 at the bore 106 and partly received in the exterior of the anchor body 104 at the suture-receiving channel 108. The combination and arrangement of the bore 106, the suture-receiving channel 108, and the port 110 form a continuous track or loop around which the adjustable loop 12 can be wrapped. In various embodiments, the passage 14 can be sized to be longer than the track or loop. This allows for radially compression or tensioning of the passage 14 using the anchor 100 and thereby prevents movement of the adjustable loop 12.

The asymmetric suture anchor 100 can include a proximal end groove 114 to receive the suture and provides a surface upon which the restriction element 28 abuts. The proximal end groove 114 is in communication with the opening at the proximal end of the anchor body 104.

The proximal end of the asymmetric suture anchor 100 also includes a driver-engaging region 116, such as those detailed earlier herein. Particular to the asymmetric anchor, the proximal end groove 114 can be provided with a key 118, depicted as inwardly curving shapes which will be axially received in the mating female driver.

Although the various embodiments detailed herein are used in connection with the asymmetric suture anchor 100, it is understood that any other anchor or screw can be used in connection with the adjustable loop 12. Suitable anchors can include an interior bore or opening in which to house the adjustable loop 12 and/or include features to protect the flexible construct 10.

Referring to FIGS. 6 and 7, the anchor 100 and the adjustable loop 12 combination is mated or connected to a driver 200. The driver 200 includes a handle 202, an adjusting arm receptacle 204, an adjustable loop mount 206, and an elongated, hollow shaft 208.

The handle 202 is located at the driver first proximal end 210. The handle 202 is partially hollow and is in communication with the shaft 208 at the shaft first proximal end 212 to facilitate passage of the adjusting arm 16 from the proximal end groove 114 of the anchor, down through the shaft 208, and out of the adjusting arm receptacle 204 on the handle 202. The handle 202 further includes the adjustable loop mount 206 to secure the adjustable loop 12 such that advancement of the driver 200 having the anchor 100 thereon through the cannula does not unintentionally move the adjustable loop 12.

To connect the driver 200, the anchor 100, and the flexible construct 10, the adjustable loop 12 is passed through the bore 106 of the anchor 100. The restriction element 28 is arranged to contact the proximal end groove 114. The adjusting arm 16 is extended through the hollow shaft 208, passed through the handle 202, and passed through the adjusting arm receptacle 204. The anchor 100 is oriented in close proximity to a second distal end 214 of the shaft 208. Next, the adjustable loop 12 is directed through the external suture-receiving channel 108 of the anchor 100 and out of the port 110. The driver-engaging feature 118 of the anchor 100 is then connected to the mated feature on the shaft second distal end 214. The adjustable loop 12 can be aligned adjacent to the exterior of the shaft 208 to extend the adjustable loop 12 to the adjustable loop mount 206. In embodiments employing a restriction element 28, the restriction element 28 can be sized to prevent passage of the restriction element through the shaft 208.

Next, the adjustable loop 12 can be removably fixed or connected to the adjustable loop mount 206. The adjustable loop mount 206 keeps the flexible construct 10 in proper alignment with the shaft 208 such that advancement of the driver 200 having the anchor 100 and flexible construct 10 thereon, through a cannula 216 does not unintentionally move the flexible construct 10. Attaching the adjustable loop 12 to the adjustable loop mount 206 provides compression of the passage 14 and thereby restricts movement of the adjustable loop 12 in the direction opposite to arrow A of FIGS. 3A and 3B. When the adjustable loop 12 is disengaged from the adjustable loop mount 206, moving the adjusting arm 16 causes a reduction in the size of the adjustable loop 12. In various embodiments, the adjustable loop 12 need not be mounted to the adjustable loop mount 206.

The tension can be maintained on the adjusting arm 16 by containing the adjusting arm 16 in the adjusting arm receptacle 204 or by other suitable means. As long as tension is maintained on the adjusting arm 16 (for example, via the adjusting arm receptacle 204) and the adjustable loop 12 (for example, via the adjustable loop mount 206), the flexible construct 10 will not move while on the driver.

In various embodiments, the flexible construct 10 is used to fix a defect where there is a need to fix a soft tissue or implant to a bone. The flexible construct 10 and surgical techniques detailed herein can be used with various repairs of the shoulder, wrist, hand, ankle, foot, elbow, knee, or hip as non-limiting examples. Exemplary repairs include Bankart Repair, SLAP Repair, Acromioclavicular separation, rotator cuff repair, capsule repair or capsulolabral reconstruction, biceps tenodesis, or deltoid repair of the shoulder; scapholunate ligament reconstruction or ulnar radial collateral ligament reconstruction of the wrist or hand; lateral stabilization, medial stabilization, Achilles tendon repair and reconstruction, halux valgus reconstruction, midfoot reconstruction, and forefoot reconstruction of the ankle or foot; lateral epicondylitis (tennis elbow) repair, ulnar or radial collateral ligament reconstruction, and biceps tendon reconstruction of the elbow; and extra-capsular repair, medial collateral ligament repair, lateral collateral ligament repair, posterior oblique ligament repair, joint capsule closure, iliotibial band tenodesis reconstruction, patellar realignment and repair, patellar ligament and tendon repair, and vastus medialis obliquus muscle advancement.

Referring to FIGS. 8A through 8D, methods of repairing a soft tissue defect, such as a cartilage defect are provided. The adjustable loop 12 is offset in the bore 106 of the asymmetric suture anchor 100 and affixed to the driver 200 as detailed above. The adjustable loop 12 is released from the adjustable loop mount 206, if used, and the assembly is placed in the cannula 216 at the defect site 300.

The adjustable loop 12 is then passed through the cartilage 302 as shown in FIG. 8B. The adjustable loop 12 can be passed through the cartilage 302 by piercing a hole in the cartilage prior to passing the suture therethrough. This can be performed with a separate needle, a needle that is removably attached to the adjustable suture loop 12 or, depending on the fastener used, with a tip of the fastener. Any suitable suture passer or other device can also be used to pass the adjustable loop 12 through the cartilage 302 such as those known in the art as “bird beak” passers or suture lariats. Two devices useful for passing the suture include those sold under the tradenames SpeedPass and ArthroPass, both made by Biomet Sports Medicine, Inc. of Warsaw, Ind. A front portion 30 of the adjustable loop is passed through and protrudes from the cartilage 302.

The front portion 30 is lengthened (or further pulled through the cartilage 302) to provide an area in which to fold the adjustable loop 12 upon itself. The front portion 30 is wrapped around the anchor 100 to form an S-shape which spans between the tissue and the anchor 100. The anchor 100 is then passed back through the adjustable loop 12 as shown in FIG. 8C. This wrapping or doubling of the adjustable loop 12 provides a region in which the tissue is compressed.

The anchor 100 is then placed in a pre-drilled hole 304 in an adjacent bone 306 as shown in FIG. 8D. The threads 112 secure the anchor 100 in the bone hole 304. The driver 200 can be removed once the anchor 100 is secured in the bone 306. This can be performed prior to or after the suture is tightened down against the tissue.

Next, the adjusting arm 16 is engaged to reduce the size of the adjustable loop 12. The restriction element 28 keeps the adjustable loop 12 in place on the anchor 100 and prevents retreat of the adjustable loop 12 through the shaft 208. When the adjusting arm 16 is advanced sufficiently far to provide the appropriate compression to the cartilage 302 and fix the cartilage 302 at the defect site 300, the ends of the adjusting arm 16 can be removed as shown in FIG. 8E.

At least a portion of the proximal end of the anchor 100 is in very close proximity to the cartilage 302 or abuts the cartilage 302, thereby enhancing the fixation of the cartilage 302 to the bone 306. In various embodiments, the suture-receiving channel 108 of the anchor can abut the cartilage 302 to minimize the length of suture 18 that remains between the beginning of the available or suturable suture in the bone hole 304 and the cartilage 302 or the other tissue to be secured. When the offset or channel 108 area of the anchor body 104 abuts the defect site 300, the repair is stronger due to the ability to more tightly secure the tissue to the underlying bone 306 and the ability to minimize the gap or lag between the anchor body 104 and the tissue.

Such embodiments where the proximity between the tissue and the anchor 100 is optimized are particularly useful in repairing certain soft tissue defects, for example, a labral tear. The anchor body proximal end would abut the labrum and provide strong attachment and promote healing of the labral tear and restore strength to the shoulder or the hip, for example.

The above-mentioned repair techniques can be used for any orthopedic repair including cartilage repair, ligament repair, or tendon repair, or any other orthopedic repair. The repair can be with an articular orthopedic surface or a non-articular and/or non-orthopedic surface.

Referring to FIGS. 9A through 9D, the present teachings also provide surgical methods where multiple flexible constructs 10 and 10′ are incorporated with multiple suture anchors 100 and 100′. To start, a first anchor 100 is inserted as described above herein. Prior to removing the first shaft 208 of the first driver 200, the second loop 12′ is passed over the first shaft 208 as shown in FIG. 9A. Next, the first shaft 208 and the first driver 200 are then removed from the defect site 300. The second anchor 100′ is then passed through the first loop 12 again to interlace the adjustable loops 12 and 12′ as shown in FIG. 9B.

The second anchor 100′ is then secured through the tissue 302 and into the bone 306. The first adjusting arm 16 and the second adjusting arm 16′ are then engaged to cause the respective loops to reduce in size and form a link or bridge 400 of interlaced adjustable loops 12 and 12′ between the first anchor 100 and the second anchor 100′. After the adjusting arms 16 and 16′ are engaged to the correct distance to reduce the respective adjustable loops and provide the appropriate amount of tissue compression and securing at the defect site 300, the adjusting arms 16 and 16′ can be optionally cut. There is no need for the surgeon to tie a knot as the interlaced and compressed loops provide the tissue fixation.

These surgical methods can be expanded to include a plurality of adjustable loops and a plurality of suture anchors. In such embodiments, the anchors are inserted in succession as detailed above. Each subsequent anchor is then wrapped through the adjustable loop of any prior anchor and then inserted into the tissue. The respective adjusting arms are then engaged advanced to create a larger interlaced bridge system.

The description of the present teachings is merely exemplary in nature and, thus, variations that do not depart from the gist of the present teachings are intended to be within the scope of the present teachings. Such variations are not to be regarded as a departure from the spirit and scope of the present teachings. 

1. A method of attaching a soft tissue to an adjacent bone at a defect site comprising: passing an adjustable loop of a flexible construct contained in a bore defined by a fastener through the soft tissue; passing the fastener back through the adjustable loop to fold the adjustable loop upon itself; attaching the fastener to the bone; and engaging an adjusting arm on the flexible construct to reduce the size of the adjustable loop and secure the soft tissue to the bone.
 2. The method of claim 1, further comprising preparing a hole in the bone to receive the fastener.
 3. The method of claim 1, further comprising passing the adjustable loop of the flexible construct through the bore defined by the fastener by advancing the adjustable loop from within the bore of the fastener and through a suture-receiving port and down a suture-receiving channel on the fastener.
 4. The method of claim 1, further comprising securing the adjustable loop to a proximal end of the fastener with a restriction element.
 5. The method of claim 4, further comprising regulating movement of the adjusting arm through the bore of the fastener via the restriction element.
 6. The method of claim 1, wherein the fastener is passed back through the adjustable loop away from the defect site.
 7. The method of claim 1, wherein the fastener is passed back through the adjustable loop at the defect site.
 8. The method of claim 1, further comprising engaging the adjusting arm at a proximal end of the fastener to cause reduction of the adjustable loop at the distal end of the fastener.
 9. The method of claim 1, further comprising interlacing a plurality of adjustable loops from a plurality of fasteners to form a suture bridge.
 10. The method of claim 1, further comprising mounting the adjustable loop to an adjustable loop mount on a driver and retaining the adjusting arm in an adjusting arm receptacle.
 11. The method of claim 1, further comprising forming the adjustable loop by passing a first end of a hollow suture through a first opening on the hollow suture, advancing the first end through a passage formed in the hollow suture, and pulling the first end out of a second opening on the hollow suture.
 12. A method of attaching a soft tissue to an adjacent bone at a defect site comprising: offsetting an adjustable loop of a flexible construct through a bore defined by a fastener; passing the adjustable loop through the soft tissue; passing the fastener back through the adjustable loop to fold the adjustable loop upon itself; fixing the fastener to an area adjacent the defect such that the adjustable loop and a proximal end of the fastener abut the defect; engaging an adjusting arm on the flexible construct to reduce the size of the adjustable loop and to retain the fastener proximal end in abutment with the soft tissue.
 13. The method of claim 12, wherein offsetting the adjustable loop comprises disposing a region of the adjustable loop in an interior bore in the fastener body that opens at a proximal end of the fastener body and disposing a region of the adjustable loop in an exterior channel connected to the interior bore.
 14. The method of claim 12, wherein the defect is an articular cartilage defect.
 15. The method of claim 12, wherein the defect is a labral tear.
 16. A method of attaching a soft tissue to an adjacent bone at a defect site comprising: passing a first adjustable loop of a first flexible construct contained in a bore defined by a first fastener through the soft tissue; attaching the first fastener to the bone; passing a second fastener having a second adjustable loop of a second flexible construct through a bore defined by the second fastener through the adjustable loop on the first fastener; passing the second fastener back through the first adjustable loop to interlace the first adjustable loop and the second adjustable loop.
 17. The method of claim 16, further comprising attaching the second fastener through the tissue and into the bone.
 18. The method of claim 17, further comprising engaging a first adjusting arm on the first flexible construct to reduce the size of the first adjustable loop and engaging a second adjusting arm on the second flexible construct to reduce the size of the second adjustable loop and thereby forming a suture bridge to secure the soft tissue to the bone.
 19. The method of claim 16, wherein passing the adjustable loop portion of the first or second flexible construct through the bore in the respective fastener further comprises advancing the respective adjustable loop from within the respective fastener bore and through a suture-receiving port and down a suture-receiving channel on the respective fastener.
 20. The method of claim 18, further comprising engaging the first adjusting arm and the second adjusting arm at the proximal end of the respective fasteners to cause reduction of the respective adjustable loops.
 21. The method of claim 16, further comprising interlacing a plurality of adjustable loops from a plurality of fasteners to form the suture bridge. 